CKT-MOTION: TrainSpotterM (Motion Detector)

TrainSpotterM (Motion Detector)

CKT-MOTION

The TrainSpotterM senses true motion of a train moving over the sensor.

NOTE: This is a motion detector, NOT a position detector. If you're adding detectors for signaling, crossings, or the Motorman, you probably DO NOT want this sensor but want one of the regular TrainSpotter (non-M) position sensors. If you are adding a sensor to the Squealer, then this IS the sensor you want.

Features

Small size (0.25" x 2.25")
Simple, discrete under-track installation
Two open collector outputs, one for each direction
Each output rated for 250mA at up to 35VDC
24" pre-stripped wire leads attached to the sensor
Powered from 5V to 24VDC
Optional mounting bracket available

Typical Applications

Flange squeal
Station announcements

Installation

The detector is designed to be installed up through the benchwork in a 3/8 inch (10 mm) hole. Because the sensor itself is so small, only a single hole is required and no complicated drilling jigs are needed. The sensor can be secured in the hole using a variety of methods such as hot glue or by using a bracket. A mounting bracket can be found here.

For proper operation, the detector must be installed in the correct orientation relative to the motion it is trying to detect. The motion should be in the direction of the green arrows below.

Electrical Connections

The TrainSpotterM needs 5 to 24 volts of clean direct current (DC) power to operate. Two outputs are provided, one activates for "left" motion and the other activates for "right" motion.

Both outputs are “open drain” (otherwise known as “open collector”) and act like a switch to the ground or negative lead. Logic level outputs can be generated by connecting a resistor to pull up the output to the positive supply. Other devices, such as LEDs or relays can also be driven directly and the outputs from multiple sensors can be connected in parallel to combine them into one signal.